F浮=G-F=98-49=49N
F浮=ρ水gV排 ,V石=V排,V石=F浮/ρ水g=49/10³×9.8=0.005m³
m石=G/g=10kg ρ石=m石/V石=10/0.005=2×10³kg/m³
则矿石在水中受到的浮力为_49N____N,矿石的体积为_0.005____立方米,矿石的密度为__2×10³___kg每立方米.
F浮=G-F=98-49=49N
F浮=ρ水gV排 ,V石=V排,V石=F浮/ρ水g=49/10³×9.8=0.005m³
m石=G/g=10kg ρ石=m石/V石=10/0.005=2×10³kg/m³
则矿石在水中受到的浮力为_49N____N,矿石的体积为_0.005____立方米,矿石的密度为__2×10³___kg每立方米.